One should be aware of their rights when they are working in a company. For e.g. consider we are an employee and while working in a company, we come across many situation where we need to have a support, some rules and regulations and some rights that we can claim in case anyone is violating our work space or is trying to use us. In that case government has drafted few criteria's on the basis of which we can stand against the corrupt people and those who are trying to harm us in some or the other way. These rules implemented by government come in the form of safety posters.
The federal law poster makes us aware of the responsibilities as well as our civil liberties that we are authorized to gain whole working in a company. It is pretty true that rights and privileges provide in a company may vary from the other if the industry is different. This happens because same rules do not apply in every field of work. You cannot make rules for all the workers to wear safety accessories in a clothing factory however it is mandatory to implement this rule in a coal mine. Hence these laws as well as obligations may vary from industry to industry.
Then there are also differences that may be present because of variance in state laws. There are different federal and state labor law posters. These posters might have variance on the basis of states depending on many reasons such as climatic conditions, majority of industries etc. Hence both federal as well as state laws are included in these posters which require to be updated with time. In case we miss out any updates, we will surely regret later as we will not be aware of our rights and thus may end up being fooled by the employers.